US387581A

US387581A - Vania

Info

Publication number: US387581A
Authority: US
Publication date: 1888-08-07
Anticipated expiration: 1905-08-07

Description

(No Model.)

L. E. CUSTER.

POLISHING DISK POR DBNTISTS.

No. 387,581. Patented Aug. '7, 1888.

WITNESSES: INVENTOR,

Q .7 5 5mi www? M LEVI TT E. OU STER,

OF DAYTON, OIIIO, ASSIGNOR TO TIIE S.

S. TVH ITE DENTAL liIANUFAOTURING COMPANY, OF PHILADELPHIA, PENNSYL- VANIA.

POLISHING-DISK FOR DENTISTS.

SPECIFICATION forming part of Letters Patent No, 387,581, dated August 7, 1888.

Application filed March Q, 1988.

T 0 all whom it may concern.-

Bc it known that I, LEvi'r'r E. CUsTER, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Polishing-Disks for Dentists; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Abrading disks for dentists use, simple and composite,have been made; but a desideratum not heretofore attained has been to provide a polishing-disk which shall bethin and flexible, while sufficiently stiff todo the work required, and which shallhavea soft instead of an abrading or cutting polishing-surf'ace. Felt and other disks have been made with a soft polishing-surface, but they are too thick. (lomposite disks have also been provided, but they have always a cutting or abrading surface.

I have attained the ends desired by devising a composite disk made of a thin backing of' prepared paper or celluloid, or other suitable thin and flexible material of the required stiffness, and a soft operating-surfaeesuch as very thin chamois-leather, flock, felt, Yes-- applied and firmly united thereto. This gives the required soft polishing surface, while the disk may be made very thin.

[have particularly set forth my claim at the close of this specificatior.

In the accompanying drawings, Figure lA is a view of my improved disk mounted on a mandrel ready for rotation and operation by the rotary chuck or tool-carrier of a dental engine. Fig. 2 is a View ofthe back, and Fig. 3 a view of the soft-surfaced operatingface of the disk. Figs. 4 and 5 are sections through the composite material of which the disks are or may be made, the thickness of which is exaggerated, Fig. 4 being supposed to represent a celluloid backing or body with a chamois facing, and Fig. 5 a paper backing with a felt facing.

The material may be made in sheets and the disks then stamped or punched out by a suitable cutter, after the fashion, for example, of a gun-wad punch. This material may be a (No model.)

paper or parchment baeking,fc, and a chamoisleather or felt facing, b, to constitute the polishing-surface. The paper may be thin and flexible, while possessing the requisite stiffness to carry the soft facing to do the work required and permit the entrance of the disk between the approximate surfaces of the teeth to be polished. If paperis used, it should be water-proofed by the use of shellac or in other well-known ways.

The chamois-leather, if used for the soft facing, is made very thin, and is applied to the paper and united thereto by a suitable cement, such as shellac, preferably under hydraulic pressure, so as to make a composite body of the two, with the layers of paper and leather permanently adherent.

Instead of the soft-leather facing, the thin disks may be made of the paper backing varnished with shellac or copal varnish,and when 7o partially dry have a soft facing added by shaking over the prepared paper fine flock or felt, for instance, which adheres by the drying ofthe varnish, the loose particles being blown off.

If the thin carrying-body is to be, say, of thin celluloid, instead ofpaper, it is vai-nished with a solution of gum-camphor in alcohol to soften the surface, and the thin layer of, say, chamois-leather, is then applied and the ma- 8o tcrial dried under pressure, so as to make the material permanently composite with a soft face. A like union of the celluloid and leather may be effected by heat and pressure.

My object has been to produce a very thin polishingdisk for dentists, having a soft operating-surface, so that the dentist can put the highest Afinishing polish on gold or other fillings, especially such as occupy approximate situations andare separated from oe the adjacent teeth by a space too narrow to admit of any but a very thin disk, my disks being usually not more than from one to two hundredths of an inch in thickness.

I do not claim an abrading or a cutting disk 9 5 having a surface of sand-paper, emery, or similar abrading lnattcr impressed into the surface of the disk; and I am aware that such composite disks have heretofore been madethat is to say, with athin backing or carrying- Ioo body, an applied surface of paper, leather, or other material, and a third or :Lbruding or cutting surface of sand. emery, or other material of that character. Such a disk is used for dental operations of an entirely diferent character from those to which my disk is fitted, my disk being for the purpose of putting on the final finish :1nd polish by means of a soft surface.

I claim- A composite polishing-disk for dentists, Consisting of' a thin carrying-body and a soft Working surface thereon, such as chamois leather, felt, &\c., substantially as described.

In testimony whereof I affix my signature in 15 presence of two Witnesses.

LEVITT E. CUS'IER.

W'itnesses:

ALBERT KERN, HATTIE Ros'r.